Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1687f1dd0e55f2…

MALICIOUS

PDF

65.3 KB Created: 2021-02-03 21:12:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: da844e12a593478f325daead99691f9f SHA-1: 79810e2165b5a5c6538367575cc740f874bd6d9a SHA-256: 2f1687f1dd0e55f2a6c6f6e1176479cc6fc342275e3ccd0f5541a21fa60e5ce9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/wb?keyword=subject%20pronouns%20and%20ser%20worksheet PDF link annotation
    • https://sopetenoredu.weebly.com/uploads/1/3/5/3/135318191/negelumuvomibijemoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468554/normal_60179bd233298.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451220/normal_5fee1414a82ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480162/normal_60090951cbe0b.pdfIn PDF document text
    • https://cdn.sqhk.co/motuwezelu/NPoijgd/home_depot_gas_pressure_washer_return_policy.pdfIn PDF document text
    • https://guwevene.weebly.com/uploads/1/3/1/4/131437413/bogogarekit.pdfIn PDF document text
    • http://jurabosuw.22web.org/38232125179.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379615/normal_5fdfa421bd743.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_601903ec7910d.pdfIn PDF document text
    • https://juwizezajofop.weebly.com/uploads/1/3/1/6/131637218/vupulujexiwave.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/jgcGL9O/death_invasion_survival_cheat_codes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xagejedidupomup.rf.gd/50360377489.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/wabumarolopotarekim.pdfIn PDF document text
    • http://wogurep.epizy.com/yellowhammer_report_government_website.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/69296428549.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF35 5604 bytes
SHA-256: e79db4c9a48ba946647e370e916a3eed545f4e7e75c273d55ba70f6c50c4d2ae
font_01_sfnt_off0000d24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24D 10716 bytes
SHA-256: 4f2fb75e9406175a01e2a5ecbba46c7bf5cd45db7ed4ea47191e6e8319079159